﻿/*13.Create a program that assigns null values to an
integer and to double variables. Try to print them on
the console, try to add some values or the null
literal to them and see the result.
 */

using System;

namespace NullValues
{
    class NullValues
    {
        static void Main()
        {
            int? a = null;
            double? b = null;
            Console.WriteLine(a);
            Console.WriteLine(b);
            Console.WriteLine(new string('-', 40));
            Console.WriteLine("See the " + a + "invisible");

        }
    }
}
